Addison overbagh



(No Model.)

} LOVERBAGH. DEVICE FOR MEASURING THE STRAIN 0N FENCE WIRES.

Patented Jan. 13, 1885 WIT-N ESSES INVENTOR J m cam/W fl ZZZ Ma aATTORNEY U ITED STATES ADDISON OVERBAGH, OF COXSAOKIE STATION, NEWV YOR.ATENT OFFICE;

DEVICE FOR MEASURING THE STRAIN 'onrencE-wlns.

SPECIFICATION forming part of Letters Patent No. 310,845, dated January13, 1885. F

Application filed J line 6, H84 (No model.)

T0 at whom it may concern: i 1

Be it.kn0wn that I, ADDISON Ovnnnacu,

a citizen of the United States, residing at Coxsackie Station, in thecounty of Columbia and ,5 State of New York, have invented certain newand useful Improven'ients in Devices for I Measuring the Strain onFence-\Vires, &c.., of

which the following is a specification,'reterence being had therein tothe accompanying drawing.

My invention relates to devices for measuring the strain on fence-wires,&c., and is designed to produce a device whereby an equal strain may-begiven to each wire, and also alaround which is wound a rope, O,connected to the wire tongs D.

The frame of the strainer proper is either formed integral with orsecured to the casing E of the strain measurer. This casing is shown asa headed cylinder in the drawing,

but may be of any form best adapted to the purpose. WVithin the cylinderis a head, F, secured to a rod, G, which passes without the saidcylinder, and has at the said outer end a ring, H, as shown. Between thehead'ot' the cylinder and the head of the rod is a spiral spring, I,surroundingthc rod and operating to normally keep the rod within thesaid 'cylinder'. The rod has marked on it a scale properly adjusted.

There has been; shown and described but one of many forms in which thedevice may be constructed-as, for example, a bow-spring. may be used inplace of the spiral spring, and a fixed scale and a movable arm may beused in place of the movable scale arm or rod.

Either end of the device may be connected 5 to the wire and the other toa post or other fixed point and operated after the usual inanncr tostretch the wire. 'As the tension beand expands under the influence ofdiifere lowance' may be made for rem peratnre changes comes greater theamount is indicated by the measurer, and when the proper tension hasbeen attained the wire-is secured in place and a another wire treated inthe same manner.

.It is a well-known factthat metal contracts degrees of temperature, andin rods or wire this is chieflylongitudinal, and exertsin fence- 5 5wire a strain which, if not allowcd for, would break the wirer Themeasurer entirely 0b-' viates this, as it shows the strain on the wire,and it is not guessed at. The rod G is provided with two scales, oneshowing the strain applied to the wire and the other the degree ofatmospheric temperature at which any certain amount of strain should beapplied. The

two scales are relative one to the other, the

higher the temperature the less the strain to 6 5 be applied, as'thecontraction of the wire as thejheat lessens will bring a greater strainthereon. If this were not allowed for, the wires would sag in warmweather or snap in cold weather. By the means described the 7)stretching of the'wires so they will remain taut at all times is reducedto a certainty. The two scales are placed coincident, sothat both may beseen at a. glance. I

Having described the device, what I claim 1. In combination with amechanism for stretching fence-wires, a measurer' having coincident andrelative scales to indicate the amount of strain to bc'applicd for aknown degree of temperature, substantially as and for the purposespecified.

2. In a wire stretcher for wire fences, the

vcombination of a wormgear, drum, tongs,

and connections, with a spring-retainedscale 8 arm or'rod, said rodcontaining a ring at its outer end, substantially as and for the purposeset forth.

Intestimony whereof I affix my signature in presence of two witnesses.

- ADDISON OVERBAGII.

\Vitncsscs:

O. B; VAN Dn CARR, WILLIAM QLEARY.

